SiteOne Landscape Supply Inc

###### ESG OVERSIGHT AND GOVERNANCE

The SiteOne Board of Directors (the "Board") is committed to strong corporate governance. We believe strong corporate governance promotes the long-term interests of stockholders, strengthens board and management accountability and helps build public trust in our company. The Board and its committees have adopted policies and processes that foster effective board oversight of critical matters such as strategy, risk management – including cybersecurity, financial and other controls – ESG considerations, compliance and management succession planning.

We are committed to environmental and social responsibility and work collaboratively with customers, associates, suppliers and other stakeholders to promote environmentally sustainable and socially responsible business practices. Our Board, specifically the Nominating and Corporate Governance Committee ("NCG Committee"), oversees our environmental stewardship and corporate responsibility initiatives, including policies and operational controls of environmental, health and safety, social risks, and climate-related risks and opportunities (collectively "ESG") and is committed to supporting our efforts to operate as a good neighbor in our communities. The Board amended the NCG Committee Charter in May 2021 to document its delegation of ESG oversight. In furtherance of these responsibilities, the NCG Committee meets quarterly and receives routine reports on the company's ESG strategy, initiatives and policies. The NCG Committee reports directly to the Board and met four times in the most recent fiscal year, 100% of the committee members attended all NCG Committee meetings.

Management also plays a key role in the company's ESG strategy. The day-to-day implementation of our ESG strategy, including the production of our annual ESG Report and stockholder outreach program, is led by our Executive Vice President, General Counsel, who serves as the company's environmental management system ("EMS") lead and reports directly to the Chief Executive Officer. Our Executive Vice President, General Counsel, receives input on ESG and sustainability matters from a cross-functional working group as part of the EMS comprised of senior-level team members including our Executive Vice President of Operations. Our EMS also identifies risk and opportunities related to ESG, including climate change. The input received as part of the EMS is then integrated into our Enterprise Risk Management ("ERM") process to communicate environmental risks, opportunities and progress to the Board.

Both our EMS and ERM processes include the use of internal strategy, stakeholder input, external research and other tools to identify and evaluate risks that could adversely affect our business. A materiality assessment of these risks is also part of our ERM process. Our Audit Committee oversees the ERM process, including the oversight of development of risk mitigation controls and procedures for the material risks we may identify.

SiteOne is not affiliated with any political party, candidate or political action committee, and we do not utilize company funds for political contributions. However, we encourage our associates to take an active role in their communities, including taking part in the political process. [...] The Nominating and Corporate Governance Committee ("NCGC") oversees our environmental stewardship and corporate responsibility initiatives, including policies and operational controls of environmental, health and safety, social risks, and climate-related risks and opportunities, and is committed to supporting our efforts to operate as a good neighbor in our communities. In May 2021, the Board adopted revisions to the NCGC's charter to memorialize the committee's responsibility for oversight of the Company's environmental stewardship and corporate responsibility matters, including climate-related risks and opportunities. In furtherance of these responsibilities, the NCGC meets quarterly and receives routine reports on the company's strategy, initiatives and policies at each of its meetings. The NCGC reports directly to the Board and met four times in the most recent fiscal year; 100% of the committee members attended all NCGC meetings. [...] The Stakeholder Impact Committee assists the NCGC and the Executive Leadership Team of SiteOne in (a) setting general strategy related to sustainability, (b) developing, implementing and monitoring initiatives and policies based on that strategy, (c) overseeing communications with SiteOne stakeholders, including associates, customers, suppliers, stockholders and the community with respect to sustainability, and (d) monitoring and assessing developments related to, and improving SiteOne's understanding of impact on vision. The Stakeholder Impact Committee includes the use of internal strategy, stakeholder input, external advisors and other tools to identify and evaluate risks related to sustainability matters that could adversely affect our business. The Stakeholder Impact Committee is comprised of certain executive leadership team members and functional leaders representing safety, human resources, transportation, category and marketing, information security and other relevant teams. The Committee meets at least quarterly.

###### ESG OVERSIGHT AND GOVERNANCE

The SiteOne Board of Directors (the "Board") is committed to strong corporate governance. We believe strong corporate governance promotes the long-term interests of stockholders, strengthens board and management accountability and helps build public trust in our company. The Board and its committees have adopted policies and processes that foster effective board oversight of critical matters such as strategy, risk management – including cybersecurity, financial and other controls – ESG considerations, compliance and management succession planning.

We are committed to environmental and social responsibility and work collaboratively with customers, associates, suppliers and other stakeholders to promote environmentally sustainable and socially responsible business practices. Our Board, specifically the Nominating and Corporate Governance Committee ("NCG Committee"), oversees our environmental stewardship and corporate responsibility initiatives, including policies and operational controls of environmental, health and safety, social risks, and climate-related risks and opportunities (collectively "ESG") and is committed to supporting our efforts to operate as a good neighbor in our communities. The Board amended the NCG Committee Charter in May 2021 to document its delegation of ESG oversight. In furtherance of these responsibilities, the NCG Committee meets quarterly and receives routine reports on the company's ESG strategy, initiatives and policies. The NCG Committee reports directly to the Board and met four times in the most recent fiscal year, 100% of the committee members attended all NCG Committee meetings.

Management also plays a key role in the company's ESG strategy. The day-to-day implementation of our ESG strategy, including the production of our annual ESG Report and stockholder outreach program, is led by our Executive Vice President, General Counsel, who serves as the company's environmental management system ("EMS") lead and reports directly to the Chief Executive Officer. Our Executive Vice President, General Counsel, receives input on ESG and sustainability matters from a cross-functional working group as part of the EMS comprised of senior-level team members including our Executive Vice President of Operations. Our EMS also identifies risk and opportunities related to ESG, including climate change. The input received as part of the EMS is then integrated into our Enterprise Risk Management ("ERM") process to communicate environmental risks, opportunities and progress to the Board.

Both our EMS and ERM processes include the use of internal strategy, stakeholder input, external research and other tools to identify and evaluate risks that could adversely affect our business. A materiality assessment of these risks is also part of our ERM process. Our Audit Committee oversees the ERM process, including the oversight of development of risk mitigation controls and procedures for the material risks we may identify.